One more for tonight. RFE/RL's Ukrainian Service has exclusive footage of the suspected grenade thrower in Kyiv caught on camera.
Barring any major developments, that ends the live blogging for today.
EU foreign affairs head Federica Mogherini expressed concern over what her statement described as "very worrying" events.
President Petro Poroshenko has called today's violence a "stab in the back."
"It was an anti-Ukrainian act for which all of its organizers without exception -- all representatives of political forces -- should be severely punished," Poroshenko said in a televised address.
More video from today's clashes.
Nationalists clashed with security personnel outside Ukraine's parliament as MPs backed controversial legislation granting more autonomy to pro-Russian rebels in the east of the country. Video shows tension before a National Guard soldier was killed by a grenade.
WARNING GRAPHIC
Prime Minister Arseniy Yatsenyuk has called for a life sentence for the person who threw a grenade at law enforcement officers outside the Ukrainian parliament today.
“As a citizen of Ukraine I demand…life imprisonment for the person who threw a grenade, which resulted in the death of a conscripted member of the National Guard of Ukraine,” he said.
Yatsenyuk said that the cynicism of this crime lies in the fact that the “so-called pro-Ukrainian political parties” are trying to open a new front inside Ukraine.
“These political parties came not to protect the constitution, but to rape the constitution and Ukraine. They, in fact are worse than Russian bandits and terrorists in the East,” he said.
As a result of the clashes near the parliament today, 119 people were injured, according to Olha Bohomolets, an adviser to the president.
“One person is in a critical condition awaiting emergency surgery. On Hrushevskoho street four more ambulances are on duty,” she wrote on Facebook.